Making Nismo ducts
 

Hey guys,
So seeing as the nismo cf ducts are so expensive, I have decided to make a mold of them to allow frp alternatives at a fraction of the price. Mainly this was for my personal use, but I thought I might as well see if anyone else might have some interest.

So the question is, would anyone else be interested?
I could probably make several molds or better yet, try to find a place could use the molds for production.

So, thoughts? Input? Comments?

Thanks!

Depends on what the pricing will look like. What you thinking?

Anyway to route ducts from the opening of the front bumper instead of actually cutting into it? Like the Stillen brake ducts? I just don't like the idea of cutting holes in my Nismo bumper.

Oh Im not in it to make money. If I get a good mold, I would give them to a shop, or make em for cost. At least a few. I don't want it to take up a lot of time, but I'd be glad to pass teem along to whoever needed.

As for the location, I dunno how effective you kcoud make them using the front opening without taking up a lot of space needed for the radiator, oil cooler, and ps cooler. Prhaps making an opening below the facsia, but that would lessen ground clearance.

This is already in the works! I am working on getting a set to mold(along with a new hood and fenders). and then you will see me as a site vendor! but the more people doing it the better!

that would be a completely different duct type. These are amazing and grant a lot of air flow. which for guys like myself who need extra cooling these are perfect

I have the Nismo brake ducts. They list $612.00 each. :eek: (got mine cheaper) So if someone could make them at a lower price. That would be great! :D

The end where the cooling hose goes on the Nismo brake duct is 4" diameter. The Stillen brake duct kit hose is 2" in diameter. So I have to come up with a reducer. That's where I'm at now. I got the reducer, but I need to do a little machining on it to fit the way I want it to.

lol Rusty. now you know what I was talking about.. lol

Oh, I KNOW what you was talking about. LOL Fell like I was getting it here went I bought them, :icon23: without a reach-around. :rolleyes:

:bowrofl: well, we can help you out if we can get these made :)

Yeah, what I was thinking was to go from the 4" opening to 2x3" outlets. 3" duct is rather easily acquired, and you could close one off if you didnt care to route 2 ducts to the rotor. Personally, I would rather have more airflow than less.

I made a rough mockup earlier today, but I'm just going to have to break down and cut the holes to get the angle just right.

Also, how to the oem ducts mount? I was thinking of a plate on the inside of the bumper. That way, I could make some studs into the duct that would go through the bumper and plate, secured by lock-nut or similar.

Sign me up for a set

Op, I have had the same idea rolling around in my head. I was going to make some out of fiberglass and mold then in to my Bumper, but I have been real lazy here lately.

as soon as I acquire a set, I will give everyone a price, and turn around time

if you guys want, after I get the ducts produced I will do some R&D and make a viable cooling system...

tho I will be ducting to my coolers and my brakes

The way they mount is a bolt with a washer or pop-rivet in each corner. That's it. Nothing behind the bumper but a washer and nut. You have to be careful. These things are thin!

I'll text you tomorrow afternoon. After I get up from sleeping. OK? :D

can someone post a link to the oem ones? sorta confussed

Don't have a direct link. They have been discussed on the forums. Its the same duct inlets that come on the 370z RC. They fit into the nismo front fascia, but require cutting. They are also redunculously expensive, which is why various people have been discussion frp alternatives.

I'll try to put up some pictures tomorrow of what I have so far. I'm pretty pleased with them, and total material cost will be...maybe $20. That's for the inlets. Still need to buy hoses and mounting hardware, but that is also a fairly trivial cost.

WOW $20? Anything less than $100 and people will be jumping on these. Looking forward to pics.

they won't be 20 bucks... I would venture to say 300-400 for a SET, would be a reasonable price..

Page 5 of my journal is a couple of pictures of them sitting on my work bench. :D Click on the link in my sign.

In for ducts!

In here.

Here's the factory Nismo brake ducts that list fir $612.00 each. Also a 4" to 2" reducer that I have to machine so that it slides inside of the duct to shorten the overall length of it.

4" duct is pretty massive, 4x the air flow vs 2" duct. If you want to make the most of it you could do a 4" to 2x 3" splitter and produce an alternate hub flange that accepts 2x3" (hardcore) or direct one hose to cool the brake caliper.

Teams that run multiple brake ducts to the rotor usually just block one off if they are running at a track that isn't that demanding on brakes in order to get the temperatures into the ideal zone.

We run 2 ..3" off of the 4"
Both direct airflow to the front brakes.

Like I said ... hardcore ;)

Could use one of these Y-Connector Dust Collection Fitting - Rockler Woodworking Tools
and two of these per side Hose Reducers - Rockler Woodworking Tools
I think there's plenty of space.

It's a few extra parts and not a perfect Y split, but pre-made plastic that's cheap.

I made mine out of fiberglass, using some pvc as templates. Turned out well for 30 minutes work.

I'm using the Rocler 4" to 2" reducer. ;) They just need alittle bit of work on them.

My Stillen brake cooling kit came today. :D Hoping to have everything installed by next Tuesday. The BIG thing is cutting the holes in the front bumper. :eek:

Interested

It would be better if you designed your own ones and made them, rather than steal Nissan's intellectual property, but thats just me.

You talking about what I'm doing? Or someone else making copies of the brake ducts?

No, I mean someone buying a set and then making molds off them to resell as replicas. I just think thats wrong.

Yeah I'm not a fan of the replica stuff either. I'm mainly making mine (from scratch) for personal use, but wanted to share with the community.

For the rest of us to follow!

Great job op!

As for replicas...I've said my part too many times, unless it's a part you no longer can get then replica away...I don't know why they(vendors)didn't offer group buys over the knock offs now on every 370Z I see...cries inside...

No doubt :eekdance:
I'm still too chicken to cut mine as well. I'll probably hold off until I'm completely finished.

I should have some pics posted this evening sometime.
I have the main duct done and the 1x4" to 2x3" reducer/splitter roughed out with a first layer of glass. I think I'm going to leave it a 2-piece design to make assembly/disassembly easier.

I was also thinking, since I'll have two 3" tubes, it would be fairly easily to run one to the brakes and one to a gen3 (or other long tube) intake

As long as you put a suction break or whatever those thingys are called to prevent turning your engine into a wet/dry shop vac :)